Name _________________________ TA ________________________MCDB 1AL Laboratory Quiz 2November 1-5, 2010Scantron Instructions:1. Use a #2 pencil to complete the form.2. Write your name and fill in the appropriate bubbles.3. Write your perm. number in the ID number box and fill in the bubbles.4. Fill in the entire rectangle of the answer you choose. If you erase, erase completelyREAD ALL QUESTIONS THOROUGHLY----IN ALL CASES, PICK THE BEST ANSWER26 Questions - 1 Point Each Unless Noted Otherwise1. The arrow is pointing to the ________ of the _______A. archenteron, morulaB.archenteron, gastrulaC.archenteron, blastulaD.blastocoel, morulaE.blastocoel, blastula2. What organ system will develop from the structure indicated by the arrow?3. In which stage of Drosophiladevelopment is the organism immobile?4. At which stage of development is this sea star embryo?5. Practical: Examine the slide given under the 40X objective. What stage of mitosis isapparent?A. MetaphaseB. ProphaseC. AnaphaseD. TelophaseE. CytokinesisMCDB 1AL Quiz 2 Version: 0Page: 1

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6. The volume of liquid dispensed in a tube after using these three pipettes is closest to______ μL.A. 872.93B. 879.56C. 910.16D. 927.46E. 944.907. You have run an agarose gel with a sample that contains DNA fragments of thefollowing sizes: 200, 800, 8,000, and 100,000 base pairs. Based on the log scale shown tothe left of the gel, which lane (A-E) most likely contains your sample.MCDB 1AL Quiz 2 Version: 0Page: 2

8. Spectrophotometers use the absorbance and transmittance of light to measure proteinconcentrations, which of the following is true? (0.5 points)

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